Improved fountain-pen



UNITED STATES PATENT OFFICE.

AUSTIN Gr. DAY, OFJSEYBIOUR, CONNECTICUT.

IMPROVED FOUNTAIN-PEN.

Specification forming part of Letters Patent No. 15,417, dated uly 29,1856.

To a/ZZ whom it may concern:

Be it known that I, AUSTIN G. DAY, of Seymour, inthe county of New Havenand State of Connecticut, have invented an Improvement in Fountain-Pens;and I do hereby declare that the following is a full, clear, and exactdescription thereof, reference bei ng had to the annexed drawings, andto the letters of reference marked thereon.

My fountain-pen is so constructed that the ink will flow freely when itis wanted, while it is eiiectually prevented from issuing from thefeed-aperture when the pen is not in use. This is accomplished by meansof a sliding feed-tube, which, together with the air passage or vent,constitutes the main feature of my invention, which I will now proceedto describe.

Figure I shows the external appearance of the pen when ready for use;Fig. "II, sliding feed-tube; Fig. III, sliding feed-tube and valve-seat;Fig. IV, longitudinal section on line A B, Fig. VI; Fig. V, hollow tubewhich forms the sheath or support for the metallic pen; Fig. VI, sectionat end ot the holder where the peu enters the sheath.

The same letters refer to the same parts in the several gures.

The tube or handle C that contains the ink is closed at its upper endand has at its lower y end a screw D, which fits into the lower cylinderor chamber E, which is of about the same diameter as the lower end ofthe handle C. This part of the tube is about two inches long, and abouttwo thirds of its length at the lower end, as at G H, is madeone-sixteenth of an inch less in diameter than its upper end, thedifference in diameter being for the purpose of allowing a very thinhollow cylinder I to be placed upon it and leave room for receiving acommon metallic pen L, which is slipped into the circular opening orspace M thus formed. The walls or sides of about one-fourth of an inchof the lower end of the chamber E are thicker, as at N, than they arefor the remainder of its length, and are so formed at the top as to makea conical valve-seat P, below which .is the aperture Q, about one-tenthof an inch in diameter. A small tube R is placed ing conical, as at S,so as to form a valve and [it the valve-seat I. Below the valve S thereis a small slot or opening T, cut. through the walls of the tube toafford a passage through which the ink may flow from the chamber E intothe sliding tube R, and thence through an opening U at the lower end ofthe tube into the pen L. The part of the sliding tube that traverses inthe lower part of the chamber E is straight, but at a point a littlelower down it is slightly curved, in order that the lower aperture U maybe in contact., or nearly so, with the inside of the pen. Upon the backof this bent sliding tube there is affixed a a small knob or pin Z, bywhich the tube is readily thrust back and forth.

An elastic tongue or spring W may extend fromA the opening U about aquarter of an inch and rest in Contact with the inside of the pen.

An air hole or vent X extends from the lower end of the chamber E andwithin the thickcned part ot' the walls of the chamber, (about half-waybetween the aperture Q for the sliding tube and the outside of the maintube,)

and opens, as at Y, upon the valve-seat. This vent is therefore closedwhenever the valve S is in its Seat.

To use the pen, take off the tube or holder C, till it with ink, andscrew it onto the charnber at D. Then by means of the knob Z thrust thesliding or Feed tube upward. This opens the orifice Y of the air-ventand at the same time brings the slot or aperture T above the valve-'seatand within the ink-chamber. The sliding tube fills with ink, whichescapes into the pen through the' opening` U at its lower end.

What I claim is- 1. The sliding feed-tube having an aperture near itsupper end through which the ink flows when the pen isl iu use, theaperture being closed and the ink excluded from the feeding-tube bydrawing it downward into the lower end of the ink-chamber.

2. The combination of the air hole or vent with the slidingfeeding-tube, the enlarged end of which closes the vent-hole when thefeeding-tube is' drawn down to stop the {iow of ink to the pen.

AUSTIN G. DAY.

In presence of- EDWD. A. STANSBURY, EDWARD WILLIAMS.

